CN201340793Y

CN201340793Y - Semi-enclosed indoor voltage transformer

Info

Publication number: CN201340793Y
Application number: CNU2009201127625U
Authority: CN
Inventors: 毛培民; 刘江仙; 祝顺峰; 祝顺庆
Original assignee: Zhejiang Horizon Instrument Transformers Co Ltd
Current assignee: Zhejiang Horizon Instrument Transformers Co Ltd
Priority date: 2009-01-19
Filing date: 2009-01-19
Publication date: 2009-11-04
Anticipated expiration: 2019-01-19

Abstract

The utility model relates to a semi-enclosed indoor voltage transformer which comprises a primary coil, a secondary coil and an iron core, wherein the primary coil and part of the secondary coil are cast into an integral component by mixing resin, the iron core is exposed outside, the incoming line and the outgoing line at the two ends of the primary coil are two high-voltage insulating support structures, namely, an end A and an end B, the end A and the end B form an angle, and the iron core is an annular iron core. Because the iron core is an annular iron core, when in use, the voltage transformer has the advantages of light weight, small flux leakage, low noise, high efficiency, good quality conformity and better stability.

Description

Indoor semiclosed voltage transformer

Technical field

The utility model relates to a kind of instrument transformer, refers more particularly to a kind of 10kV and following voltage transformer.

Background technology:

At present, the indoor semiclosed voltage transformer of 10kV and following electric pressure adopts semi-enclosed casting insulated architecture, comprise epoxy resin main insulation, primary winding, secondary coil and iron core, primary winding and part secondary coil are poured into black box with mixed with resin, iron core exposes, one time winding two ends turnover line is two High-Voltage Insulation corbelings, is respectively A, B end, and side a and b mutually at an angle.The contour structures of side a and b is provided with a plurality of umbrella shapes shirt rim.Profile unshakable in one's determination is a rectangle, forms with bar shaped iron closed assembly.This structure is because iron core is stacked, and there is seam in iron core, and unshakable in one's determination is fastening with folder, the iron core mis-behave that brought by thrust and seam unshakable in one's determination, and loss increase and noise are big; There are defectives such as volume is big, Heavy Weight in laminated core structure.

The utility model content

The purpose of this utility model is the deficiency that overcomes prior art, and a kind of indoor semiclosed voltage transformer of structure is provided, and has advantages such as loss is little, noise is little, volume is little, in light weight.

The technical scheme that technical problem adopted that solves is: a kind of indoor semiclosed voltage transformer, comprise primary winding, secondary coil and iron core, primary winding and part secondary coil are poured into black box with mixed with resin, iron core exposes, one time winding two ends turnover line is two High-Voltage Insulation corbelings, be respectively A, B end, side a and b is characterized in that above-mentioned iron core is a ring structure iron core mutually at an angle; Ring structure iron core is rolled by silicon steel sheet and forms.

The beneficial effects of the utility model are: because iron core adopts ring structure iron core, the ring structure iron core structure is the nature tightening state, has avoided the iron core mis-behave that brought by thrust because of iron core, and loss increases.Advantages such as ring structure iron core self is a jointless integral body, and is in light weight when operation, that leakage field is little, noise is low, efficient is high, quality conformance is good, more stable.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is the front view of the utility model embodiment;

Fig. 2 is the left view of the utility model embodiment.

Among the figure 1, folder 2, iron core 3, pour mass 4, secondary connection terminal 5, bolt 6, primary connection terminal

Embodiment:

The utility model embodiment voltage transformer is the semi-enclosed product of indoor type poured with epoxy resin, is applicable to voltage supplied, electric energy measurement and used for relay protection in rated frequency 50Hz rated voltage 10kV and the following electric power system.As shown in Figure 1, 2, indoor semiclosed voltage transformer adopts semi-enclosed casting insulated architecture, comprise epoxy resin main insulation pour mass 1, pour mass 1 for primary winding and secondary coil pour into integral body with mixed with resin, pour mass 1 is provided with secondary connection terminal 4; Iron core 2 exposes, the ring structure iron core that iron core 2 forms for silicon steel sheet rolls, iron core 2 usefulness folders 1 are fastening by four groups of bolts 5 of symmetry, and the primary connection terminal 6 of a winding two ends turnover line is two High-Voltage Insulation corbelings, and the contour structures of primary connection terminal 6 is provided with a plurality of umbrella shapes shirt rim.Primary connection terminal 6 is respectively A, B end, and side a and b mutually at an angle.

Because iron core 2 adopts ring structure iron cores, the ring structure iron core structure is the nature tightening state, has avoided the iron core mis-behave that brought by thrust because of iron core, and loss increases.Advantages such as ring structure iron core self is a jointless integral body, and is in light weight when operation, that leakage field is little, noise is low, efficient is high, quality conformance is good, more stable.

Claims

1, a kind of indoor semiclosed voltage transformer, comprise primary winding, secondary coil and iron core, primary winding and part secondary coil are poured into black box with mixed with resin, iron core exposes, one time winding two ends turnover line is two High-Voltage Insulation corbelings, be respectively A, B end, side a and b is characterized in that above-mentioned iron core is a ring structure iron core mutually at an angle.

2, a kind of indoor semiclosed voltage transformer according to claim 1 is characterized in that above-mentioned ring structure iron core is rolled by silicon steel sheet to form.